u-boot-brain/drivers/mtd
pekon gupta d016dc42ce mtd: nand: omap: enable BCH ECC scheme using ELM for generic platform
BCH8_ECC scheme implemented in omap_gpmc.c driver has following favours
+-----------------------------------+-----------------+-----------------+
|ECC Scheme                         | ECC Calculation | Error Detection |
+-----------------------------------+-----------------+-----------------+
|OMAP_ECC_BCH8_CODE_HW              |GPMC             |ELM H/W engine   |
|OMAP_ECC_BCH8_CODE_HW_DETECTION_SW |GPMC             |S/W BCH library  |
+-----------------------------------+-----------------+-----------------+

Current implementation limits the BCH8_CODE_HW only for AM33xx device family.
(using CONFIG_AM33XX). However, other SoC families (like TI81xx) also have
ELM hardware module, and can support ECC error detection using ELM.

This patch
- removes CONFIG_AM33xx
	Thus this driver can be reused by all devices having ELM h/w engine.
- adds omap_select_ecc_scheme()
	A common function to handle ecc-scheme related configurations. This
	can be used both during device-probe and via user-space u-boot commads
	to change ecc-scheme. During device probe ecc-scheme is selected based
	on CONFIG_NAND_OMAP_ELM or CONFIG_NAND_OMAP_BCH8
- enables CONFIG_BCH
	S/W library (lib/bch.c) required by OMAP_ECC_BCHx_CODE_HW_DETECTION_SW
  	is enabled by CONFIG_BCH.
- enables CONFIG_SYS_NAND_ONFI_DETECTION
	for auto-detection of ONFI compliant NAND devices
- updates following README doc
	doc/README.nand
	board/ti/am335x/README
	doc/README.omap3

Signed-off-by: Pekon Gupta <pekon@ti.com>
[scottwood@freescale.com: fixed unused variable warning]
Signed-off-by: Scott Wood <scottwood@freescale.com>
2013-11-21 13:33:41 -06:00
..
nand mtd: nand: omap: enable BCH ECC scheme using ELM for generic platform 2013-11-21 13:33:41 -06:00
onenand mtd: move & update nand_ecclayout structure (plus board changes) 2013-11-21 13:32:43 -06:00
spi drivers: mtd: convert makefiles to Kbuild style 2013-10-31 13:22:13 -04:00
ubi drivers: mtd: convert makefiles to Kbuild style 2013-10-31 13:22:13 -04:00
at45.c Add GPL-2.0+ SPDX-License-Identifier to source files 2013-07-24 09:44:38 -04:00
cfi_flash.c Merge branch 'master' of git://www.denx.de/git/u-boot-cfi-flash 2013-07-26 15:29:08 -04:00
cfi_mtd.c Add GPL-2.0+ SPDX-License-Identifier to source files 2013-07-24 09:44:38 -04:00
dataflash.c Add GPL-2.0+ SPDX-License-Identifier to source files 2013-07-24 09:44:38 -04:00
ftsmc020.c Add GPL-2.0+ SPDX-License-Identifier to source files 2013-07-24 09:44:38 -04:00
jedec_flash.c Add GPL-2.0+ SPDX-License-Identifier to source files 2013-07-24 09:44:38 -04:00
Makefile drivers: mtd: convert makefiles to Kbuild style 2013-10-31 13:22:13 -04:00
mtdconcat.c mtd: resync with Linux-3.7.1 2013-05-31 17:12:03 -05:00
mtdcore.c Coding Style cleanup: remove trailing empty lines 2013-10-14 16:06:54 -04:00
mtdpart.c mtd: driver _read() returns max_bitflips; mtd_read() returns -EUCLEAN 2013-10-09 12:52:04 -05:00
mw_eeprom.c Update i386 code (sc520_cdp) 2008-09-09 11:48:53 +02:00
st_smi.c Add GPL-2.0+ SPDX-License-Identifier to source files 2013-07-24 09:44:38 -04:00